Open fans? (6)
I believe the answer is:
public
'open' is the definition.
(associated in meaning)
I don't understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for public that I've seen before include "Offence against common decency" , "Strangely enough, these English schools are not" , "Open, known, generally" , "Notorious" , "Overt" .)